Bug#902946: Fails to load autofs module through autofs4 alias

[Ben Hutchings]

Package: systemd
Version: 239-1
Severity: serious

Starting with Linux 4.18, the autofs4 kernel module is renamed
to autofs, but retaining an 'autofs4' alias.

Despite the presence of the alias, systemd fails to load the
autofs module:

    systemd[1]: Failed to insert module 'autofs4': No such file or directory

Opened as 'serious' since I think autofs supports critical
functionality in systemd.

Ben.

-- Package-specific info:

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.17.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  adduser          3.117
ii  libacl1          2.2.52-3+b1
ii  libapparmor1     2.12-4
ii  libaudit1        1:2.8.3-1
ii  libblkid1        2.32-0.1
ii  libc6            2.27-3
ii  libcap2          1:2.25-1.2
ii  libcryptsetup12  2:2.0.3-4
ii  libgcrypt20      1.8.3-1
ii  libgnutls30      3.5.18-1
ii  libgpg-error0    1.31-1
ii  libidn11         1.33-2.2
ii  libip4tc0        1.6.2-1
ii  libkmod2         25-1
ii  liblz4-1         1.8.2-1
ii  liblzma5         5.2.2-1.3
ii  libmount1        2.32-0.1
ii  libpam0g         1.1.8-3.7
ii  libseccomp2      2.3.3-2
ii  libselinux1      2.8-1
ii  libsystemd0      239-1
ii  mount            2.32-0.1
ii  procps           2:3.3.15-2
ii  util-linux       2.32-0.1

Versions of packages systemd recommends:
ii  dbus            1.12.8-3
ii  libpam-systemd  239-1

Versions of packages systemd suggests:
ii  policykit-1        0.105-20
ii  systemd-container  239-1

Versions of packages systemd is related to:
pn  dracut           <none>
ii  initramfs-tools  0.131~1.gbp0170b7
ii  udev             239-1

-- no debconf information